Cracked disc

[LordGrover]

To my untrained eye this looks iffy - acceptable or should it be replaced?

[LordGrover]

Thanks for opinions. Being a pussy I'm going to bin them. For the sake of c. £100 I'd rather have the peace of mind and enjoy a long life rather than take an unnecessary risk.

[LordGrover]

Once they were off, both sides had two cracks right through.
£80 and two new shiny discs now stopping me nicely.